#include<iostream>
using namespace std;
int c[200005][200005];
int main(){
	int n,a,b,g,k;
	cin>>n;
	for(int i = 1; i <= n; i++){
		cin>>a>>b>>g>>k;
		for(int m = a; m <= a + g; m++){
			for(int l = b; l <= b + k; l++){
				c[m][l] = i;
			}
		}
	}
	int d,e;
	cin>>d>>e;
	cout<<c[d][e];
	return 0;
}